Gallery: Scientists Find Way to Turn LED Lights Into Wireless Internet ...

 

LEDs are already known for being a super energy efficient way to light up a room, but did you know that they might also be a way for you to connect to the internet? That’s right, a group of scientists from Germany’s Fraunhofer Institute have devised a way to encode a visible-frequency wireless signal in light from our plain old desklamps and other light fixtures. Just think – in the near future, jumping on the interwebs might be as simple as flipping on your lightswitch!

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5 Comments

  1. JOATMON March 14, 2010 at 11:59 am

    This is not new, nor is it news…

    The Visible Light Communication Consortum has been investigating this for years, and also efforts in IEEE 802.15.7 and Ecma TC47 are under way to standardize this. In addition, a blue LED isn’t necessary; experimental efforst have used red and green LEDs as well.

    Google VLC.

  2. whatmeworry March 11, 2010 at 5:55 pm

    I think they plan for this to be asymmetric, most people just need high speed to the computer, the small bandwidth going back to the light from the computer would be radio wireless. When you click a URL a few hundred bytes go out but 1000x more bytes come back.

  3. metis March 11, 2010 at 5:01 pm

    not to burst your bubble thingswelike, but light is a form of radiation…..

    i’m interested in how they’re managing the signal to noise ratio in reflections and other sources. i can see the shimmer of leaves or reflections off water or light from tv screens or monitors adding in noise, and a sunny window overpowering the reader.

  4. mshaub March 11, 2010 at 12:32 pm

    That’s awesome! How does the signal get back fro
    my computer to the lamp though?

  5. thingswelike March 11, 2010 at 10:36 am

    Now that could be a really nice radiation-free way to have wireless. It just needs to be broad enough so that placement doesn’t need to be too fussy. Infra-red wireless devices are obviously already around and they never took off for internet use.

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